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Finding the Fourth Proportional to 172,012.40, 257,500.20 and 151,276.40

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Solution

The fourth proportional to 172,012.40, 257,500.20 and 151,276.40 is: 226,458.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,012.40 : 257,500.20 = 151,276.40 : x
  2. Step 2: Convert to fraction form
    172,012.40/257,500.20 = 151,276.40/x
  3. Step 3: Cross multiply
    172,012.40x = 257,500.20 × 151,276.40
  4. Step 4: Simplify right side
    172,012.40x = 38,953,703,255.28
  5. Step 5: Solve for x
    x = 38,953,703,255.28/172,012.40
  6. Step 6: Final answer
    x = 226,458.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.